Tritium Self-illuminating TC4 Titanium Alloy Armband Compatible with Velcro

Tritium self-illuminating TC4 titanium alloy armband compatible with Velcro
Tritium tubes do not require any energy and can self-illuminate for about 25 years. The fluorescence of tritium gas is weak and cannot be observed during the day. In dark places, you can find it glowing. The reverse Velcro design can be used as a backpack or clothing with Velcro stickers, or as a zipper puller.
Shell material: TC4 titanium alloy

Size: 41x16x10mm Key ring diameter 14mm

Luminous tube size: 3x22.5mm (2 tubes per pendant)

Weight: about 17 grams